20110223 has 4 divisors (see below), whose sum is σ = 22983120. Its totient is φ = 17237328.

The previous prime is 20110217. The next prime is 20110229. The reversal of 20110223 is 32201102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20110217) and next prime (20110229).

It is a cyclic number.

It is not a de Polignac number, because 20110223 - 2¹² = 20106127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436438 + ... + 1436451.

It is an arithmetic number, because the mean of its divisors is an integer number (5745780).

Almost surely, 2^20110223 is an apocalyptic number.

20110223 is a deficient number, since it is larger than the sum of its proper divisors (2872897).

20110223 is an equidigital number, since it uses as much as digits as its factorization.

20110223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872896.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20110223 is about 4484.4423287629. The cubic root of 20110223 is about 271.9395004934.

Adding to 20110223 its reverse (32201102), we get a palindrome (52311325).

The spelling of 20110223 in words is "twenty million, one hundred ten thousand, two hundred twenty-three".